PMC powder is a tailings of copper ore with a relatively high iron grade,which has certain practical value in sintering.In order to develop and utilize new resources of iron ore for sintering,Shougang Jingtang conducted a sintering cup test on the addition of PMC powder in sintering.The research results show that the total iron grade of PMC powder reaches 62.00％,which belongs to magnetic refined powder.Its w(TiO2)content is as high as 2.22％,and a large amount of addition will lead to an increase in TiO2 content in the sintered ore,which is not conducive to the low-temperature reduction pulverization performance of the sintered ore.The addition of PMC powder reduces the number of core particles and increases the proportion of adhesive powder in the mixture,which leads to a decrease in the permeability of the material layer and a decrease in the vertical sintering speed.With the increase of PMC powder ratio,the yield of sintered ore shows an upward trend,and the solid fuel consumption decreases.When the PMC powder mass ratio is 3％,it reaches the lowest level,reducing by about 2.3 kg/t.Although adding PMC powder can reduce the vertical sintering speed,the yield of sintered ore increases,so the sintering utilization coefficient remains basically unchanged.After adding PMC powder,the average particle size of the sintered ore increased by 1～2 mm,and the particle size composition improved significantly.
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